西北太平洋柔鱼资源丰度的空间尺度分析  

Spatial scale analysis of abundance index of neon flying squid Ommastrephes bartramii in the northwest Pacific Ocean

作　　者：杨铭霞[1] 陈新军[1,2,3] 冯永玖[1,2,3] 

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]上海海洋大学大洋生物资源开发和利用上海市高校重点实验室,上海201306 [3]上海海洋大学大洋渔业资源可持续开发省部共建教育部重点实验室,上海201306

出　　处：《大连海洋大学学报》2013年第2期206-210,共5页Journal of Dalian Ocean University

基　　金：国家自然科学基金资助项目(NSFC41276156);国家"863"计划项目(2012AA092303);国家发改委产业化专项(2159999);国家"十二五"科技支撑计划项目(2013BAD13B01);上海市科技创新行动计划项目(12231203900)

摘　　要：对2011年西北太平洋柔鱼Ommastrephes bartramii渔获统计数据,进行了12个不同尺度的划分,采用地统计学方法分别计算了各尺度下柔鱼资源丰度的空间分布格局的特点。结果表明:块金值和基台值在不同尺度下的变化趋势基本一致,但其他参数表现有所差异;中小尺度下半变异函数拟合模型主要为指数模型和球状模型,变程呈线性分布,空间自相关性相对较强;而大尺度下半变异函数拟合模型均为高斯模型,变程呈现上下波动趋势,空间自相关性相对较弱。结合西北太平洋柔鱼群体自身的种群结构特征以及海洋环境进行分析,结果表明,小尺度下空间结构差异主要反映了柔鱼群体自身的种群结构特征,中尺度下主要反映了海洋环境对柔鱼群体结构产生的影响,而大尺度下变量的随机性和变化幅度较大,体现的空间自相关性较弱,可能受海洋环境的影响过大而不适于柔鱼种群空间分布格局的研究。In the paper analyzes the catch data northwest Pacific Ocean in 2011 and processed of neon flying squid Ommastrephes bartramii were analyzed in the according to 12 different scales. The geo-statistical method is used to calculate the spatial distribution pattern the squid abundance. The results showsed that the trends of nugget and sill value at different scales were basically consistent, but other parameters of performance were different, that semivariogram was fitted by exponential model and spherical model in the meso-seale and small scale. The range was linear distribution, and spatial auto-correlation was relatively strong, and that semivariogram was fitted by Gaussian model in large scale, the range was fluctuated,and spatial auto-correlation was relatively weak. Further, the structural characteristics of the squid stocks and marine environmental factors were analyzed together. The results indicated that the differences in spatial structure in small scale mainly reflectd inherent structural characteristics of the squid stocks, that the difference mainly reveals influences of marine environmental factors on structural characteristics of squid stocks, that the random and amplitude of variables were large in large scale, spatial autocorrelation was weak, and it was probably not suitable to study spatial distribution of the squid stocks because of too large impact of marine environmental factors on them.

关 键 词：西北太平洋 柔鱼 资源丰度 地统计学 尺度分析 

分 类 号：S931.9[农业科学—渔业资源]